Malicious PDF — malware analysis report

Static analysis result for SHA-256 607889546a5b1fb0…

MALICIOUS

PDF

53.5 KB Created: 2020-08-08 17:00:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65961223348b7987874d4fff5e744494 SHA-1: 4f964a61eee10101000afab57cf898eff070da87 SHA-256: 607889546a5b1fb05921d70b64ea99268536b0cc7299e475dc9fcc815013ae73
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a phishing or scam attempt. The document body text and embedded links indicate a lure for a 'teachers day speech' PDF, which likely leads to malicious content via the redirector. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links supports a high confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=5th+september+teachers+day+speech+in+bengali+pdf In PDF document text
    • http://files.sandpiperonsmithslake.com/uploads/1/3/1/4/131436956/5655211.pdfIn PDF document text
    • http://files.vejudo.com/uploads/1/3/0/7/130739916/sokazovegumil-xonevejul-vetojavavug.pdfIn PDF document text
    • http://fokeg.rachaelhudes.com/uploads/1/3/1/4/131407406/3773259.pdfIn PDF document text
    • http://files.apparelfromhazy.com/uploads/1/3/1/4/131437333/1221815.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/pigumorujuvemasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/73914810183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8734/files/axis_direct_demo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0942/files/mebolujatikijefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/clicker_keypad_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/rigasopixojixakunuvir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/43729337446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5381/7762/files/22675643000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/cardioversion_medicamentosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/39386536543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4050/4999/files/allama_iqbal_open_university_books_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8228/4194/files/87301110440.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8319 5520 bytes
SHA-256: 1f210de91b71eb13a00193656a77947f92e1e66c51f854e349c144b94f398aef
font_01_sfnt_off000095b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B0 10908 bytes
SHA-256: cc8d36a64f679e23a991d06a24b2f21b4bef4cdd33d35d0ddd6a6ea4b8992067
font_02_sfnt_off0000bab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB4 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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